Numerical study of the effect of soil-plant-atmosphere interaction under future climate projections and different vegetation covers

IF 3.7 2区工程技术 Q3 ENERGY & FUELS

Geomechanics for Energy and the Environment Pub Date : 2025-06-04 DOI:10.1016/j.gete.2025.100697

Maryam Sadat Maddah Sadatieh , Aikaterini Tsiampousi , Athanasios Paschalis

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引用次数: 0

Abstract

Soil-plant-atmosphere interaction (SPAI) plays a significant role on the safety and serviceably of geotechnical infrastructure. The mechanical and hydraulic soil behaviour varies with the soil water content and pore water pressures (PWP), which are in turn affected by vegetation and weather conditions. Focusing on the hydraulic reinforcement that extraction of water through the plant roots offers, this study couples advances in ecohydrological modelling with advances in geotechnical modelling, overcoming previous crude assumptions around the application of climatic effects on the geotechnical analysis. A methodology for incorporating realistic ecohydrological effects in the geotechnical analysis is developed and validated, and applied in the case study of a cut slope in Newbury, UK, for which field monitoring data is available, to demonstrate its successful applicability in boundary value problems. The results demonstrate the positive effect of vegetation on the infrastructure by increasing the Factor of Safety. Finally, the effect of climate change and changes in slope vegetation cover are investigated. The analysis results demonstrate that slope behaviour depends on complex interactions between the climate and the soil hydraulic properties and cannot be solely anticipated based on climate data, but suctions and changes in suction need necessarily to be considered.

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未来气候预估和不同植被覆盖下土壤-植物-大气相互作用影响的数值研究

土壤-植物-大气相互作用（SPAI）对岩土基础设施的安全性和可使用性起着重要作用。土壤的力学和水力特性随土壤含水量和孔隙水压力（PWP）而变化，而土壤含水量和孔隙水压力又受植被和天气条件的影响。本研究着眼于通过植物根系提取水所提供的水力加固，将生态水文模型的进展与岩土模型的进展结合起来，克服了以前围绕在岩土分析中应用气候效应的粗糙假设。本文开发并验证了一种将现实生态水文效应纳入岩土分析的方法，并将其应用于英国Newbury的一个堑坡的案例研究中，该案例具有现场监测数据，以证明其在边界值问题中的成功适用性。结果表明，植被通过提高安全系数对基础设施产生积极影响。最后，分析了气候变化对坡面植被覆盖的影响。分析结果表明，边坡行为取决于气候和土壤水力特性之间复杂的相互作用，不能仅根据气候数据进行预测，但吸力和吸力的变化必须考虑在内。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geomechanics for Energy and the Environment Earth and Planetary Sciences-Geotechnical Engineering and Engineering Geology

CiteScore

5.90

自引率

11.80%

发文量

期刊介绍： The aim of the Journal is to publish research results of the highest quality and of lasting importance on the subject of geomechanics, with the focus on applications to geological energy production and storage, and the interaction of soils and rocks with the natural and engineered environment. Special attention is given to concepts and developments of new energy geotechnologies that comprise intrinsic mechanisms protecting the environment against a potential engineering induced damage, hence warranting sustainable usage of energy resources. The scope of the journal is broad, including fundamental concepts in geomechanics and mechanics of porous media, the experiments and analysis of novel phenomena and applications. Of special interest are issues resulting from coupling of particular physics, chemistry and biology of external forcings, as well as of pore fluid/gas and minerals to the solid mechanics of the medium skeleton and pore fluid mechanics. The multi-scale and inter-scale interactions between the phenomena and the behavior representations are also of particular interest. Contributions to general theoretical approach to these issues, but of potential reference to geomechanics in its context of energy and the environment are also most welcome.